A Note on Noncentrality Parameters for Contrast Tests in a One-Way Analysis of Variance

被引：2

作者：

Liu, Xiaofeng Steven ^{[1
]}

机构：

[1] Univ S Carolina, Dept Educ Studies, Columbia, SC 29209 USA

来源：

JOURNAL OF EXPERIMENTAL EDUCATION | 2010年 / 78卷 / 01期

关键词：

analysis of variance; noncentrality parameter; statistical power;

D O I：

10.1080/00220970903224669

中图分类号：

G40 [教育学];

学科分类号：

040101 ; 120403 ;

摘要：

The noncentrality parameter for a contrast test in a one-way analysis of variance is based on the dot product of 2 vectors whose geometric meaning in a Euclidian space offers mnemonic hints about its constituents. Additionally, the noncentrality parameters for a set of orthogonal contrasts sum up to the noncentrality parameter for the omnibus F test. The author provides an example of Helmert contrasts to demonstrate the use of the noncentrality parameters in contrast tests.

引用

页码：53 / 59

页数：7

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